Aluminum Spiral High Speed Doors 

Aluminum spiral high speed rolling doors, is the most high end model of all rapid roller doors. It is made from strong and thermal insulated aluminum sandwich panel, and with same high running speed as regular pvc high speed doors. The door rail is specially made in spiral shape, for the panels moving smoothly in it up and down. Such spiral rapid door have full advantages including fast running speed, thermal insulation, excellent wind resistance, and burglarproof strength. It is the best choice for high standard factory, warehouse, garages and commercial buildings. It can be installed both exterior or interior locations.  High speed door is a type of automatic roll up door that is designed to open and close very quickly, widely used in modern factories and warehouses. It can run in high speed and frequency, very fit for areas with heavy traffic. It improves efficiency of material handling. On the other hand, air flow and heat conduction through the door is reduced obv…

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